I went in thinking I was going to fall in love with Blackwall (because physically he's my type) but I ended up loving Solas to pieces. Of course neither one of those guys was available to my character and neither was Cullen, but I did like to pretend that my romance with Bull never happened and that me and Solas were secretly in love lol Dorian I just couldn't stand; his arrogant attitude just put me off.
But yeah it's funny when you go in with predispositions, only to have another character sweep you off your feet 
However, I still have a thing for Blackwall. Perhaps that's why my dwarf will go for him.
It really is a testament to great character development although there is always room for more in this game. And Dorian really surprised me, if you romance him, his arrogance is really a cover for a deeper insecurity. He's the only one I can still break up with after you're commited and I think they did that on purpose because he's always afraid he'll loose you. He says as much after Adamant too.
When they mod Blackwall's beard into a goatee, I'll be all over him! After I'm all over Cullen when he gets a light beard mod

these guys faces should really show the passage of time! Cullen with a beard after Perserverence would add that little touch that he's stressed